What is made here
Wine colours
Colours the rules allow. Pick a colour to filter the rules and grapes below.
Where it is
Bizeljčan in Slovenia
- Latitude
- 45.8°–46.3° N
- Vineyard altitude
- 209 m to 502 m
- Production zone
- 116,990 ha
Covers the same area as
Bizeljsko Sremič
Worked out from the boundaries (smallest container first). They follow whole communes, so a neighbour sharing a commune can show up here too.
Boundary drawn from whole communes, so it is a little larger than the legal zone. Boundary: Eurac Research PDO inventory (CC0). Country outlines: Natural Earth. Dots on the zone map are the vineyard points used for climate.
Showing every colour The colour filter changes the rules and grapes. Climate, vintages and soils describe the vineyards, so they stay the same.
01 · What the law says
The rules
Limits on grapes, yields, ripeness and ageing that every wine labelled Bizeljčan must meet.
Other varieties allowed
Besides the main grapes, the rules allow these varieties in some wines. Grape names link where a profile exists.
26 varieties ·
Bela Zlahtnina, Beli Pinot, Chardonnay, Dišeci Traminec, Gamay, Kerner, Kraljevina, Laški Rizling, Modra Frankinja, Modri Pinot, Portugalka, Radgonska Ranina, Ranfol, Rdeca Zlahtnina, Renski Rizling, Rizvanec, Rumeni Muškat, Rumeni Plavec, Sauvignon Blanc, Sivi Pinot, Traminec, Zametovka, Zeleni Silvanec, Zweigelt, Šentlovrenka, Šipon
In the vineyard and cellar: rules for every wine
4,000
Vines per hectare, minimum
02 · Climate fingerprint
The climate
The growing season averages 16.2 °C, intermediate on Gregory Jones's scale, with 1,347 growing degree days (Winkler Ib).
The average year 1991–2020, vineyards at about 322 m
Monthly mean, °CRain, mmGrowing season
- Growing-season temperature
- 16.2 °C
- Intermediate · 15–17 °C (Jones)
- Growing degree days
- 1,347
- Region Ib: 1,111–1,388 degree days
- Growing-season rain
- 670 mm
- Of 1,015 mm a year
- Harvest rain
- 200 mm
- September–October
Copernicus ERA5-Land monthly averages at 5 vineyard points (Vineyard point 1, 281 m; Vineyard point 2, 435 m; Vineyard point 3, 423 m; Vineyard point 4, 209 m; Vineyard point 5, 262 m), moved to each point's height from the model's terrain. Indices that need daily data are not captured yet. How the climate figures are made.
Closest climates in the database
Picked by the data, not by hand: the profiles nearest on season warmth (counted twice), degree days, rain, ripening-month nights and day–night range. Neighbours within 30 km are left out, as they share the same weather.
1. RégniéVery similarCompared with Bizeljčan: same season warmth, similar rain.
2. Châtillon-en-DioisVery similarCompared with Bizeljčan: same season warmth, similar rain.
3. MorgonVery similarCompared with Bizeljčan: same season warmth, similar rain.
Growing-season temperature
Growing degree days
Growing-season rain
03 · Year by year
35 vintages
Each column is one growing season: heat above or below the 1991–2020 average, and rain at harvest. Pick a year for the details.
Warmer than averageCooler than averageHarvest rain (Sep–Oct)Average harvest rain, 200 mm
2025
- Growing-season temp.
- Growing degree days
- Harvest rain
- Growing-season rain
- September nights
- Hot days and frosts
Seasons are labelled by harvest year (April–October). Year-to-year changes from ERA5-Land; tested against station records in Alto Adige (r = 0.94 for season temperature at Bolzano). Rain varies more locally, so treat single-season rain with some caution. Vintage ratings, harvest dates and frost or hail events have places in the data model but are not loaded yet.
04 · Where the numbers come from
Sources
- A geospatial inventory of regulatory information for wine protected designations of origin in Europe · Candiago et al., Scientific Data 9, 394 (2022); Eurac Research · CC0
- ERA5-Land monthly averaged data (reanalysis-era5-land-monthly-means) · Copernicus Climate Change Service (C3S), Climate Data Store · CC BY 4.0 (Copernicus licence)
- OpenStreetMap vineyard areas (landuse=vineyard), from Geofabrik country extracts · OpenStreetMap contributors · ODbL 1.0
- Copernicus DEM GLO-90 (AWS open data tiles) · European Space Agency / Copernicus · Copernicus DEM licence
- Product specification: Bizeljčan (SPECIFIKACIJA PROIZVODA- Bizeljčan.doc) · National authority, as filed in the EU register (eAmbrosia) · Official document
- Appellation nesting worked out from boundaries (pipeline/build_nesting.py) · Vinous, from the Eurac PDO boundaries · CC0 (source data)
- Climate profiles calculated by Vinous: method
Still to check (3)
- Generated from EU reference data: check against the current product specification.
- From the specification: Wine with recognised traditional designation (PTP) from the Bizeljsko Sremič area. Actual alcohol must lie within 10.0-12.0 % vol (red) and 10.0-12.5 % vol (white); titratable acidity 6-8 g/l; ash at least 1.6 (red) / 1.2 g/l (white). Red: varieties blended only as grapes, destemmed, macerated 3-7 days at 20-30 °C. Acidification, sorbates, electrodialysis, cation exchange and hot bottling are prohibited. Vine density must be greater than 4,000 vines/ha; wine filled in stainless kegs may be sold for at most two years after harvest; organoleptic score at least 16.3. The yield limit is 8,000 litres per hectare.
- National tier (DOC/DOCG) not captured yet; rules extracted from the specification text.